Improvement in screens



@tutti @Mitica 'CHARLES Y LooKvvoon.0F HAVERSTRAW, NEW YORK.

Letters Patent No.'104,173, dated .Tune 14, 1870.

The Schedule referred to in these Letten Patent and making part of thesame To all whom. it may concern l Be it known that-1, CHARLES LooKwooD,of Haverstraw, in the county of Rockland and-State of New York, haveinvented a 4new and useful Improvement in Screens, Gratings, Sto.; andIv do hereby declare that'the following is afull, clear, and exactdescription thereof; which will enable others skilled in the art to makeand use the same, reference'being had to the accompanying drawingforming part of Vthis 'specification, in which'- l Figure 1 -is a sideview `of the frame, showing the manner in which the screen or grating isAsecured in i piace,

, .Figure 2 is a longitudinali section vof the same, taken through theline y y, iig.' 3l y Figure 3 is a cross-section of the same, takenthrough the line x :c of ig. '1. 1

'Similar letters of 'reference indicate"corresponding parts.

My invention has for its vobject to improve the c0ustruction of themetallic part of the screen or grating, and the manner of `attachment:to the frame to .adapt it for use for sand and coal screens, ash-sieves,door and window-gratings, wool-.washing machine, gratings, and similarpurposes; audiv It consists in Vthe construction and combination ofvarious parts of tl1e11achine,as hereinafter more fully I described.

A represents the frame, which may bethe frame of a screen, door, window,or other thing, to which the their ends, which are passed through holesat the proper distance apart in the side bars of theframe A.

D are half round bars, placed upon the opposite sides ofthe bars C, andriveted to them, as shown in The bars D are madeequal in vlength withthe bars C, and their ends pass through vthe holes -in sidebars of theframe A, as shown in figs. land 3.

The bars D are intended to give the requisite strength and stiffness tothe bars O, while allowing the said hars O to be made so light that theymay be readily punched.

` The bars G D are secured in place in the frame A by the wires or rodsE, which pass continuously through all the ends ofthe said bars OD, uponeach side of the frame A, as shown in' fig. 1.

' The wires or ods E are secured in place by bending their ends downuponv the sides of the end bars C D, as shown in fig. 1.

This construction makes the screen or grating strong and stiff, enablesit to be readily and Acheaply' made, and adapts it for use as a screenor grating, as

may be desired. l Having thus described my invention,

l claim as new and desire to secure by @Letters Patent- A Y i 1. Thecombination of two half round bars D, with. each of the cross-bars C,through holes in which the Wires or 4rods B pass, substantially asherein shown and described, and for the purposes set forth. v 2. Thecombination ofthe continuous wires ory rods E with the ends of the halt`round bars D, perforated bars C, and frame A, substantially as hereinshown vand described, and for the purpose set'fo'rth. r I. The abovespecification of my invention signed by me this 24th day of November,18,69. v

`Witnessesz CHARLES LOOKWOOD.

GEO. W. MABEE, JAMES T. GRAHAM.

